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Local Environment Variables

This package allows you to specify which environmental variable you require in your application. It will create a .env file, prompt you to populate it, and add the .env file to your .gitignore file.

The functionality described is in line with the guidelines set out in the The Twelve-Factor App section III Config.

Implementation

# import
from local_env_vars.env import LocalEnvVars

# setup
env = LocalEnvVars("sql_server_address", "sql_username", "sql_password")

# sample usage
connection_string = "Driver={{SQL Server}};Server={0}; Database=AdventureWorks;uid={1};pwd={2}".format(
        env.vars['sql_server_address'], 
		env.vars['sql_username'], 
		env.vars['sql_password']
    )

Running this code for the first time will create an .env and add .env to the project .gitignore file.

The .env file will have the following content. It will throw an exception reporting that you must provide values to the keys.

{"sql_server_address": "", "sql_username": "", "sql_password": ""}

After you have populated the keys with values you will be able to execute the code without any exceptions.